diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index c35b8ff..69d93a2 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -16,6 +16,7 @@ tauri-plugin-store = "2.0.0-beta"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 anyhow = "1.0"
+lazy_static = "1.4.0"
 tokio = { version = "1.36.0", features = ["rt-multi-thread", "net", "macros", "io-util", "time", "sync"] }
 tauri-plugin-process = "2.0.0-beta"
 tauri-plugin-shell = "2.0.0-beta"
diff --git a/src-tauri/src/client.rs b/src-tauri/src/client.rs
index ebb59a1..85bbc28 100644
--- a/src-tauri/src/client.rs
+++ b/src-tauri/src/client.rs
@@ -3,7 +3,7 @@ use std::{io::BufRead, path::PathBuf};
 
 use crate::{
     adb::{Adb, Device},
-    resource::{ResHelper, ResourceName},
+    resource::{ResHelper, ResourceName}, share,
 };
 
 /**
@@ -119,6 +119,8 @@ impl ScrcpyClient {
             // clear string to store new line only
             s.clear();
         }
+        
+        *share::CLIENT_INFO.lock().unwrap() = None;
         println!("Scrcpy server closed");
         Ok(())
     }
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 120ab6b..85eb83b 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -5,3 +5,4 @@ pub mod control_msg;
 pub mod resource;
 pub mod scrcpy_mask_cmd;
 pub mod socket;
+pub mod share;
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index b31b9ae..4347073 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -5,6 +5,7 @@ use scrcpy_mask::{
     adb::{Adb, Device},
     client::ScrcpyClient,
     resource::{ResHelper, ResourceName},
+    share,
     socket::connect_socket,
 };
 use std::{fs::read_to_string, sync::Arc};
@@ -54,6 +55,17 @@ fn start_scrcpy_server(
     address: String,
     app: tauri::AppHandle,
 ) -> Result<(), String> {
+    let mut client_info = share::CLIENT_INFO.lock().unwrap();
+    if let Some(_) = &*client_info {
+        return Err("client already exists".to_string());
+    }
+
+    *client_info = Some(share::ClientInfo::new(
+        "unknow".to_string(),
+        id.clone(),
+        scid.clone(),
+    ));
+
     let dir = app.path().resource_dir().unwrap().join("resource");
     let version = ScrcpyClient::get_scrcpy_version();
 
@@ -108,6 +120,15 @@ fn start_scrcpy_server(
     Ok(())
 }
 
+#[tauri::command]
+fn get_cur_client_info() -> Result<Option<share::ClientInfo>, String> {
+    let client_info = share::CLIENT_INFO.lock().unwrap();
+    match &*client_info {
+        Some(client) => Ok(Some(client.clone())),
+        None => Ok(None),
+    }
+}
+
 #[tauri::command]
 /// get device screen size
 fn get_device_screen_size(id: String, app: tauri::AppHandle) -> Result<(u32, u32), String> {
@@ -217,6 +238,7 @@ async fn main() {
             forward_server_port,
             push_server_file,
             start_scrcpy_server,
+            get_cur_client_info,
             get_device_screen_size,
             adb_connect,
             load_default_keyconfig
diff --git a/src-tauri/src/share.rs b/src-tauri/src/share.rs
new file mode 100644
index 0000000..74173fa
--- /dev/null
+++ b/src-tauri/src/share.rs
@@ -0,0 +1,23 @@
+use lazy_static::lazy_static;
+use std::sync::Mutex;
+
+#[derive(Debug, Clone, serde::Serialize)]
+pub struct ClientInfo {
+    pub device_name: String,
+    pub device_id: String,
+    pub scid: String,
+}
+
+impl ClientInfo {
+    pub fn new(device_name: String, device_id: String, scid: String) -> Self {
+        Self {
+            device_name,
+            device_id,
+            scid,
+        }
+    }
+}
+
+lazy_static! {
+    pub static ref CLIENT_INFO: Mutex<Option<ClientInfo>> = Mutex::new(None);
+}
diff --git a/src-tauri/src/socket.rs b/src-tauri/src/socket.rs
index 8a1df23..5c53396 100644
--- a/src-tauri/src/socket.rs
+++ b/src-tauri/src/socket.rs
@@ -13,6 +13,7 @@ use tokio::{
 use crate::{
     control_msg::{self, ControlMsgType},
     scrcpy_mask_cmd::{self, ScrcpyMaskCmdType},
+    share,
 };
 
 pub async fn connect_socket(
@@ -26,7 +27,7 @@ pub async fn connect_socket(
         .await
         .context("Socket connect failed")?;
 
-    println!("成功连接scrcpy-server:{:?}", client.local_addr());
+    println!("connect to scrcpy-server:{:?}", client.local_addr());
 
     let (read_half, write_half) = client.into_split();
 
@@ -71,6 +72,9 @@ async fn read_socket(
                 end -= 1;
             }
             let device_name = std::str::from_utf8(&buf[..end]).unwrap();
+            // update device name for share
+            share::CLIENT_INFO.lock().unwrap().as_mut().unwrap().device_name = device_name.to_string();
+
             let msg = json!({
                 "type": "MetaData",
                 "deviceName": device_name,
diff --git a/src/components/Device.vue b/src/components/Device.vue
index 93ead1b..c14d544 100644
--- a/src/components/Device.vue
+++ b/src/components/Device.vue
@@ -17,6 +17,7 @@ import {
   startScrcpyServer,
   getDeviceScreenSize,
   adbConnect,
+  getCurClientInfo,
 } from "../invoke";
 import {
   NH4,
@@ -86,6 +87,26 @@ onMounted(async () => {
 });
 
 onActivated(async () => {
+  let curClientInfo = await getCurClientInfo();
+  if (store.controledDevice) {
+    // update controledDevice if client not exists
+    if (!curClientInfo) {
+      await shutdown();
+      store.controledDevice = null;
+      message.warning(t("pages.Device.alreadyDisconnected"));
+    }
+  } else {
+    // restore controledDevice if client exists
+    if (curClientInfo) {
+      message.warning(t("pages.Device.alreadyControled"));
+      store.controledDevice = {
+        scid: curClientInfo.scid,
+        deviceName: curClientInfo.device_name,
+        deviceID: curClientInfo.device_id,
+      };
+    }
+  }
+
   await refreshDevices();
 });
 
@@ -178,6 +199,18 @@ function onMenuClickoutside() {
 }
 
 async function deviceControl() {
+  let curClientInfo = await getCurClientInfo();
+  if (curClientInfo) {
+    message.warning(t("pages.Device.alreadyControled"));
+    store.controledDevice = {
+      scid: curClientInfo.scid,
+      deviceName: curClientInfo.device_name,
+      deviceID: curClientInfo.device_id,
+    };
+    store.hideLoading();
+    return;
+  }
+
   if (!port.value) {
     port.value = 27183;
   }
diff --git a/src/i18n/en-US.json b/src/i18n/en-US.json
index 9d5ffda..0f0873e 100644
--- a/src/i18n/en-US.json
+++ b/src/i18n/en-US.json
@@ -35,7 +35,9 @@
       },
       "controledDevice": "Controlled device",
       "availableDevice": "Available devices",
-      "noControledDevice": "No Controled Device"
+      "noControledDevice": "No Controled Device",
+      "alreadyControled": "Controlled device already exists",
+      "alreadyDisconnected": "Controlled device connection has been disconnected"
     },
     "Mask": {
       "inputBoxPlaceholder": "Input text and then press enter/esc",
diff --git a/src/i18n/zh-CN.json b/src/i18n/zh-CN.json
index 425e53c..2952d5c 100644
--- a/src/i18n/zh-CN.json
+++ b/src/i18n/zh-CN.json
@@ -35,7 +35,9 @@
       },
       "controledDevice": "受控设备",
       "noControledDevice": "无受控设备",
-      "availableDevice": "可用设备"
+      "availableDevice": "可用设备",
+      "alreadyControled": "已存在受控设备",
+      "alreadyDisconnected": "受控设备连接已断开"
     },
     "Mask": {
       "keyconfigException": "按键方案异常，请删除此方案",
diff --git a/src/invoke.ts b/src/invoke.ts
index 9c7f157..98f335c 100644
--- a/src/invoke.ts
+++ b/src/invoke.ts
@@ -29,6 +29,14 @@ export async function startScrcpyServer(
   return await invoke("start_scrcpy_server", { id, scid, address });
 }
 
+export async function getCurClientInfo(): Promise<{
+  device_name: string;
+  device_id: string;
+  scid: string;
+} | null> {
+  return await invoke("get_cur_client_info");
+}
+
 export async function getDeviceScreenSize(
   id: string
 ): Promise<[number, number]> {